CN103604997B - Resistance measurement system of strain gages for spacecraft - Google Patents
Resistance measurement system of strain gages for spacecraft Download PDFInfo
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- CN103604997B CN103604997B CN201310629078.5A CN201310629078A CN103604997B CN 103604997 B CN103604997 B CN 103604997B CN 201310629078 A CN201310629078 A CN 201310629078A CN 103604997 B CN103604997 B CN 103604997B
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- foil gauge
- pressure
- thick stick
- support shaft
- pressure head
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Abstract
The invention discloses a kind of resistance measurement system of strain gages for spacecraft, including test board, compressing unit group, action bars, support shaft, wave band switching switch and electric resistance measuring apparatus, wherein, the compressing unit group being arranged on test board is made up of some groups of compressing units, some groups of compressing units are fixed and are located in support shaft, support shaft supported on both sides is on bearing block, lock slots one are provided with through in the middle part of support shaft one end of bearing block, action bars is fixedly attached in lock slots one by clamping block and can rotate support shaft with the lifting of action bars, support shaft drives compressing unit landing thereon, pressure thick stick is made to compress the foil gauge on strain bar by support shaft with dynamic head, drive lead wire briquetting that the lead of foil gauge is pressed on elastic contact chip simultaneously.This invention removes foil gauge pressured state uncertain factor, pressure stability, foil gauge is pressurized, and uniformly testing reliability is improved, and foil gauge protected effect is improved, 1 measurement, 10 foil gauges, and easy to operate, work efficiency is improved.
Description
Technical field
The invention belongs to satellite assembly verification test technical field, in particular it relates to a kind of spacecraft is used answer
Become piece filler test system.
Background technology
At present, foil gauge checks and accepts screening a two methods, and one is foil gauge direct measurement in its natural state, and two is with general
Logical briquetting pushes down the measurement of foil gauge sensitive grid.
First method, after excluding operational issue, examines the outward appearance of foil gauge, it is found that every foil gauge is being put naturally
In the case of putting, the foil gauge of differently curved radian is carried out nature rolled state and uniform by the case of bending in different radians
Test under stress state of applanation, resistance occurs in that the change of ± 0.2 Ω, the experiment results proved method of testing is present with environment shape
The unstable problem of state difference test result.
Second method, foil gauge screening process push down foil gauge using arbitrarily common briquetting, using conventional numeral ten thousand
The two ends of foil gauge lead are clamped by red-black test pencil (alligator clamp) respectively with table, carrys out the resistance of measuring strain piece.This test
There is the following drawback in mode：
1) as briquetting is very big with the contact area of following substrate, much larger than foil gauge bulk area, therefore pressure cannot be ensured
The weight of block is all applied on foil gauge body, causes each measuring strain piece pressure inconsistent；
2) need when due to survey measurementss hand-held ramp, ramp and foil gauge lead be necessarily in one it is unstable
Stress, cause the contact resistance between lead and ramp unstable, affect measurement；As lead is very thin, bearing
Foil gauge is easily damaged during pulling force.For this purpose, provide a kind of screening measuring system that can carry out spacecraft foil gauge very must
Will.
The content of the invention
The goal of the invention of the present invention is to provide a kind of spacecraft foil gauge filler test system, and the system is by work
Debug, calibrate, testing, comparing and studied and completed.Foil gauge resistance test is carried out using the test system of the present invention,
Testing reliability, testing efficiency, original process is superior to aspects such as the protections of foil gauge, the system overcomes existing sieve
The defect of method of testing is selected, expected R＆D target has been reached, foil gauge filler test work quality can be effectively improved.
To achieve these goals, present invention employs following technical scheme：
A kind of resistance measurement system of strain gages for spacecraft, including test board, compressing unit group, action bars, support shaft,
Wave band switching switch and electric resistance measuring apparatus, wherein, the compressing unit group on test board is arranged on by some groups of compressing units
Constitute, some groups of compressing units are fixed and are located in support shaft, support shaft supported on both sides on bearing block, through bearing block
Support axle is provided with lock slots one in the middle part of one end, and action bars is fixedly attached in lock slots one by clamping block and can be with action bars
Lifting rotates support shaft, also processes a lock slots two supporting above shaft end, and bearing pin is arranged in lock slots two, operation
Bar is rotated around bearing pin by clamping block and is swung, and is fixed with another symmetry operation bar by contiguous block in the support shaft other end
Connection, is machined with stopper slot on bearing block, and by installing stop screw in contiguous block correspondence position, to carry out left and right directions spacing,
Compressing unit includes straining bar, lead wire briquetting, compresses adjusting nut, holddown spring, pressure head, stop pin, pressure thick stick and pressure thick stick
Fixed block, elastic contact chip, pressure thick stick fixed block will press thick stick to hold tightly on fulcrum by four screws, and lead wire briquetting is another with pressure thick stick
One end is fixedly connected by two screws, presses thick stick to compress the strain with lead wire on strain bar by fulcrum with dynamic head
Piece body part, while drive lead wire briquetting that the lead of foil gauge is pressed on elastic contact chip, after elastic contact chip
Two holes are opened at end, and one is used to be mechanically anchored in strain bar, and one connects electric resistance measuring apparatus by forks piece terminal and realizes
Electrical connection, electrical system include that a pair of calibrating terminals coordinate circuit tester to use, and 10 band switches select calibrating terminal
Corresponding foil gauge and realize the handoff functionality to foil gauge.
Wherein, pressure head is coordinated for cylindrical pair with pressure thick stick, possesses rotational freedom, to prevent from pressing thick stick to rotate the square for causing pressure head
It is not inconsistent with the actual attitude of foil gauge after the rotation of shape part, on pressure head, is machined with anti-rotation groove, coordinates with stop pin on pressure thick stick and prevent pressure
Head is rotated；When pressing thick stick to be in depressed position, pressure head top departs from pressure thick stick, and the pressure of holddown spring is all delivered to by pressure head
The reduction length of holddown spring on foil gauge body, is adjusted by compressing adjusting nut, and then adjusts pressure of the pressure head to foil gauge
Power.
Wherein, pressure head of the pressure head for hard aluminium alloy.
Wherein, the upper end step of pressure head is for constraining pressure head under non-impaction state, so as not to slide under the action of the spring
Go out.
Wherein, elastic contact chip is metal material, and wire briquetting and strain bar are plastic insulation material；
Wherein, when pressing thick stick to push in place, elastic contact chip occurs to deform in a small amount, and its elastic force ensures foil gauge lead and bullet
Property contact chip good contact.
Wherein, it is provided with test board both sides for moving the handle of the measuring system.
The present invention compared with prior art, with advantages below：
1) eliminate foil gauge pressured state uncertain factor, pressure stability, consistent, foil gauge is pressurized uniform, and test can
It is improved by property, foil gauge protected effect is improved；
2) test mode of hand-held ramp connecting lead wire is eliminated, contact conditions are stable, and testing reliability is improved,
Foil gauge protected effect is improved；
3) 1 group of 10 foil gauge can be measured for 1 time, easy to operate, work efficiency is improved.
Description of the drawings
Fig. 1 is the front view of the resistance measurement system of strain gages for spacecraft of the present invention；
Fig. 2 is the top view of the resistance measurement system of strain gages for spacecraft of the present invention；
In Fig. 1,23- support columns, 43- hex nuts.
In Fig. 2, the left action bars of 17-, 18- action bars handles, the right action bars of 20-, 21- test boards, 22- electrical panels, 30-
Handle, 32- wave bands switching switch, 34- binding posts, 38- hexagon socket cap head screws, 40,41,42- Cross Recess Head Screws.
Fig. 3 is the compressing unit of the resistance measurement system of strain gages for spacecraft of the present invention；
In Fig. 3,1- strain bars, 2- pressure thick sticks, 3- pressure heads, 4- holddown springs, 5- compress adjusting nut, 6- lead wire pressures
Block, 8- stop pins, 9- pressure thick stick fixed blocks, 11- elastic contact chips.
Fig. 4 is the pressure head of the resistance measurement system of strain gages for spacecraft of the present invention；
In Fig. 4,12- anti-rotation grooves.
Specific embodiment
Below in conjunction with the accompanying drawings the frock for measuring satellite separating switch drift of the present invention is made further
It is bright.The resistance measurement system of strain gages for spacecraft of the present invention, including test board 21, compressing unit group, left action bars 17, the right side
Action bars 20, support shaft 13, wave band switching switch 32 and electric resistance measuring apparatus, wherein, the compression list being arranged on test board
Tuple is made up of some groups of compressing units, and some groups of compressing units are fixed and are located in support shaft, and support shaft supported on both sides is in axle
In bearing, lock slots one are provided with through in the middle part of support shaft one end of bearing block, action bars is fixedly attached to locking by clamping block
In groove one and can rotate support shaft with the lifting of action bars, also process a lock slots two above shaft end support, sell
Axle is arranged in lock slots two, and action bars is rotated around bearing pin by clamping block and swung, in the support shaft other end by connecting
Connect block to be fixedly connected with another symmetry operation bar, stopper slot is machined with bearing block, by installing in contiguous block correspondence position
It is spacing that stop screw carries out left and right directions, and compressing unit includes straining bar 1, lead wire briquetting 6, compresses adjusting nut 5, compresses
The pressure head 3 of spring 4, hard aluminium alloy, stop pin 8, pressure thick stick 2 and pressure thick stick fixed block 9, elastic contact chip 11, pressure thick stick fixed block lead to
Crossing four screws will press thick stick to hold tightly on fulcrum, and lead wire briquetting is fixedly connected by two screws with the pressure thick stick other end, presses thick stick
The foil gauge body part with lead wire on strain bar is compressed by fulcrum with dynamic head, while driving lead wire briquetting
The lead of foil gauge is pressed on elastic contact chip, the rear end Kai Liangge holes of elastic contact chip, one is used to be mechanically anchored in
On strain bar, one connects electric resistance measuring apparatus by forks piece terminal and realizes electrical connection, and electrical system includes a pair of tests
Binding post coordinates circuit tester to use, and 10 band switches select the corresponding foil gauge of calibrating terminal and realize cutting foil gauge
Change function.
As pressure head is coordinated for cylindrical pair with pressure thick stick, possesses rotational freedom, to prevent from pressing thick stick to rotate the square for causing pressure head
It is not inconsistent with the actual attitude of foil gauge after the rotation of shape part, anti-rotation groove 12 is processed on pressure head, coordinates with stop pin 8 on pressure thick stick and prevent
Pressure head is rotated.When pressing thick stick to be in depressed position, pressure head top departs from pressure thick stick, and the pressure of holddown spring is all transmitted by pressure head
To on foil gauge body.Can pass through to compress the reduction length that adjusting nut adjusts holddown spring, and then pressure head is adjusted to foil gauge
Pressure, be provided with test board both sides for moving the handle of the measuring system.
In a specific embodiment, the upper end step of pressure head for constraining pressure head under non-impaction state, so as not to
Skid off under the action of the spring.
In a specific embodiment, elastic contact chip is metal material, and it is exhausted that wire briquetting and strain bar are plastics
Edge material；
In a specific embodiment, when pressure thick stick is pushed in place, elastic contact chip occurs to deform in a small amount, and its elastic force ensures
Foil gauge lead and elastic contact chip good contact.
The concrete grammar for carrying out foil gauge filler test is as follows：
1) circuit tester is set to into resistance measurement pattern, connects circuit tester and test fixture with rubber plug wire.Wherein
" COM " binding post of circuit tester is connected with the black binding post " COM " of foil gauge test fixture, " Ω " binding post of circuit tester with
The red binding post of foil gauge test fixture is connected.
2) left stick is pulled to the right, after pressure thick stick unblock, about 45 degree of left and right stick is lifted, discharging left stick makes pressure thick stick
It is locked in cocked position.
3) each foil gauge to be measured is placed in correspondence strain bar.
4) left stick is pulled to the right after placing each foil gauge, both hands are exerted a force simultaneously after pressure thick stick unblock, pressure left and right behaviour
To horizontal level, discharge left stick makes pressure thick stick be locked in compacted position to vertical pole.
5) the rotation band switch on rotary fixture, reads each foil gauge resistance (switch arrow indication number from circuit tester
The each foil gauge seat number code of code correspondence).
6) repeat the operation of the 2nd step, remove each foil gauge, complete test.
Although above the specific embodiment of the present invention being described in detail and being illustrated, it should be noted that
We can be made various changes and modifications to above-mentioned embodiment, but these are without departure from the spirit and appended power of the present invention
Profit requires described scope.
Claims (6)
1. a kind of resistance measurement system of strain gages for spacecraft, including test board, compressing unit group, action bars, support shaft, ripple
Section switching switch and electric resistance measuring apparatus, wherein, the compressing unit group on test board is arranged on by some groups of compressing unit structures
Into, some groups of compressing units are fixed and are located in support shaft, support shaft supported on both sides on bearing block, through the support of bearing block
Lock slots one are provided with the middle part of axle one end, action bars is fixedly attached in lock slots one by clamping block and can be with the liter of action bars
Drop rotates support shaft, also processes a lock slots two supporting above shaft end, and bearing pin is arranged in lock slots two, action bars
Rotated around bearing pin by clamping block and swung, fixed with another symmetry operation bar by contiguous block in the support shaft other end and connected
Connect, stopper slot is machined with bearing block, by stop screw spacing, the pressure that carries out left and right directions being installed in contiguous block correspondence position
Tight unit includes straining bar, lead wire briquetting, compresses adjusting nut, holddown spring, pressure head, stop pin, pressure thick stick and press thick stick solid
Determine block, elastic contact chip, pressure thick stick fixed block will press thick stick to hold tightly on fulcrum by four screws, and lead wire briquetting is another with pressure thick stick
End is fixedly connected by two screws, presses thick stick to compress the foil gauge with lead wire on strain bar by fulcrum with dynamic head
Body part, while drive lead wire briquetting that the lead of foil gauge is pressed on elastic contact chip, the rear end of elastic contact chip
Two holes are opened, one is used to be mechanically anchored in strain bar, and one connects electric resistance measuring apparatus by forks piece terminal and realizes electricity
Gas connects, and electric resistance measuring apparatus include a pair of calibrating terminals, coordinates circuit tester to use, and 10 band switches select test wiring
The corresponding foil gauge of post and realize the handoff functionality to foil gauge, pressure head with pressure thick stick be cylindrical pair cooperation, possess rotational freedom,
To prevent the rectangle part for pressing thick stick rotation to cause pressure head not to be inconsistent with the actual attitude of foil gauge after rotating, anti-rotation on pressure head, is machined with
On groove, with pressure thick stick, stop pin coordinates prevention pressure head to rotate；When pressing thick stick to be in depressed position, pressure head top departs from pressure thick stick, compresses
The pressure of spring is all delivered on foil gauge body by pressure head, long by the compression for compressing adjusting nut regulation holddown spring
Degree, and then adjust pressure of the pressure head to foil gauge.
2. resistance measuring system as claimed in claim 1, wherein, pressure head of the pressure head for hard aluminium alloy.
3. resistance measuring system as claimed in claim 1, wherein, the upper end step of pressure head is for constraining under non-impaction state
Pressure head, so as not to skid off under the action of the spring.
4. resistance measuring system as claimed in claim 1, wherein, elastic contact chip is metal material, wire briquetting and strain
Bar is plastic insulation material.
5. resistance measuring system as claimed in claim 1, wherein, when pressure thick stick is pushed in place there is little quantitative change in elastic contact chip
Shape, its elastic force ensure foil gauge lead and elastic contact chip good contact.
6. the resistance measuring system as described in any one of claim 1-5, wherein, be provided with test board both sides for it is mobile should
The handle of measuring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310629078.5A CN103604997B (en) | 2013-11-29 | 2013-11-29 | Resistance measurement system of strain gages for spacecraft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310629078.5A CN103604997B (en) | 2013-11-29 | 2013-11-29 | Resistance measurement system of strain gages for spacecraft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103604997A CN103604997A (en) | 2014-02-26 |
| CN103604997B true CN103604997B (en) | 2017-03-29 |
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ID=50123238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310629078.5A Active CN103604997B (en) | 2013-11-29 | 2013-11-29 | Resistance measurement system of strain gages for spacecraft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103604997B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269691A (en) * | 2017-07-18 | 2019-01-25 | 中国航空工业集团公司济南特种结构研究所 | A kind of strain measurement foil gauge wiring construction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378971A (en) * | 1990-11-30 | 1995-01-03 | Tokyo Electron Limited | Probe and a method of manufacturing the same |
| US5414351A (en) * | 1993-10-22 | 1995-05-09 | United Microelectronics Corporation | Method and apparatus for testing the reliability of semiconductor terminals |
| US5414369A (en) * | 1992-11-09 | 1995-05-09 | Nhk Spring Co., Ltd. | Coil spring-pressed needle contact probe modules with offset needles |
| CN202994842U (en) * | 2012-11-30 | 2013-06-12 | 中国振华集团云科电子有限公司 | Chip resistor test clamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4518041B2 (en) * | 2006-05-19 | 2010-08-04 | エルピーダメモリ株式会社 | Probe card |
-
2013
- 2013-11-29 CN CN201310629078.5A patent/CN103604997B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378971A (en) * | 1990-11-30 | 1995-01-03 | Tokyo Electron Limited | Probe and a method of manufacturing the same |
| US5414369A (en) * | 1992-11-09 | 1995-05-09 | Nhk Spring Co., Ltd. | Coil spring-pressed needle contact probe modules with offset needles |
| US5414351A (en) * | 1993-10-22 | 1995-05-09 | United Microelectronics Corporation | Method and apparatus for testing the reliability of semiconductor terminals |
| CN202994842U (en) * | 2012-11-30 | 2013-06-12 | 中国振华集团云科电子有限公司 | Chip resistor test clamp |
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| Publication number | Publication date |
|---|---|
| CN103604997A (en) | 2014-02-26 |
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